Studies on the thermal stability of polyurethanes containing pyridine: Thermogravimetric analysis

▸ We investigated the pyridine containing polyurethanes using TGA. ▸ HDI based PUPys have higher Ti, but lower Te. ▸ Lower BINA content PUPys improved thermal stability at lower temperature. ▸ MDI-BDO hard segment improves the decomposition temperature of BINA unit. ▸ Thermo-oxidative degradation mechanism is associated with the hydrogen bonding of pyridine.